/**
 *  \file DerivativesFromRefined.h
 *  \brief Accumulate the derivatives of the refined particles
 *
 *  Copyright 2007-2010 IMP Inventors. All rights reserved.
 */

#ifndef IMPCORE_DERIVATIVES_FROM_REFINED_H
#define IMPCORE_DERIVATIVES_FROM_REFINED_H

#include "core_config.h"

#include "XYZ.h"
#include <IMP/Refiner.h>
#include <IMP/Pointer.h>
#include <IMP/SingletonModifier.h>


IMPCORE_BEGIN_NAMESPACE

//! Accumulate the derivatives of the refined particles.
/** \see DerivativesToRefined
    \see CoverRefined
    \see CentroidOfRefinedSingletonModifer
 An example showing a how to use such a score state to maintain a cover
 of the atoms of a protein by a sphere per residue.
 \htmlinclude cover_particles.py.html
 */
class IMPCOREEXPORT DerivativesFromRefined:
public SingletonModifier
{
  IMP::internal::OwnerPointer<Refiner> refiner_;
  FloatKeys ks_;
public:
  //! Copy ks from the particles returned by r.
  DerivativesFromRefined(Refiner *r,
                         FloatKeys ks
                         = XYZ::get_xyz_keys());

  IMP_SINGLETON_MODIFIER_DA(DerivativesFromRefined);
};

IMPCORE_END_NAMESPACE

#endif  /* IMPCORE_DERIVATIVES_FROM_REFINED_H */